ASTM C1142-95

Standard Specification for Extended Life Mortar for Unit Masonry

SCOPE
1.1 This specification covers extended life mortar as delivered for use in construction of non-reinforced or reinforced unit masonry.
1.2 This specification is a property standard.
1.3 Four types of mortar are covered: RM, RS, RN, and RO. These types of mortar can be manufactured by using one of the four mortar formulations with masonry aggregate: portland cement, portland cement-lime, masonry cement, or masonry cement with portland cements. The materials are listed in Section 5.
1.4 Appendix X1 provides a rationale statement and commentary.

General Information

• Status: Historical
• Publication Date: 31-Dec-2000
• Technical Committee: C12 - Mortars and Grouts for Unit Masonry
• Drafting Committee: C12.03 - Specifications for Mortars

Relations

• Replaced By: ASTM C1142-95(2001) - Standard Specification for Extended Life Mortar for Unit Masonry
• Effective Date: 01-Jan-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1142 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
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Extended Life Mortar for Unit Masonry
This standard is issued under the fixed designation C 1142; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This specification covers extended life mortar as deliv- 3.1 Definitions of Terms Specific to This Standard:
ered for use in construction of non-reinforced or reinforced unit 3.1.1 All terms in this specification have their conventional
masonry. meaning, except as follows:
1.2 This specification is a property standard. 3.1.2 extended life mortars—mortar consisting of cementi-
1.3 Four types of mortar are covered: RM, RS, RN, and RO. tious materials, aggregate, water and set-control admixtures
These types of mortar can be manufactured by using one of the which are measured and mixed at a central location, using
four mortar formulations with masonry aggregate: portland weight-or-volume-control equipment. This mortar, as delivered
cement, portland cement-lime, masonry cement, or masonry to a construction site, shall be usable for a period in excess of
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cement with portland cements. The materials are listed in 2 ⁄2 h.
Section 5.
4. Ordering Information
1.4 Appendix X1 provides a rationale statement and com-
mentary.
4.1 The purchaser shall specify the following:
4.1.1 The mortar type in Table 1,
2. Referenced Documents
4.1.2 Length of workability time for the mortar, and
2.1 ASTM Standards: 4.1.3 Desired consistency satisfactory for the mason’s use
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C 91 Specification for Masonry Cement when tested by the manufacturer in accordance with 10.2.
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C 144 Specification for Aggregates for Masonry Mortar 4.2 At the request of the purchaser, the producer shall, prior
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C 150 Specification for Portland Cement to delivery, furnish laboratory and field performance data
C 207 Specification for Hydrated Lime for Masonry Pur- satisfactory to the purchaser that the materials to be used will
2
poses produce mortar of the type specified.
3
C 270 Specification for Mortar for Unit Masonry
NOTE 1—The purchase order or contract may list the mortar ingredients
C 780 Test Method for Preconstruction and Construction
desired and may state a list of optional data, which are in addition to the
Evaluation of Mortars for Plain and Reinforced Unit
performance requirements in Section 7. Examples of such tests are: Test
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Masonry
Method C 1072, Test Methods E 518, Test Methods E 447, and test data
for mortar that has been retempered.
C 1072 Test Method for Measurement of Masonry Flexural
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Bond Strength
5. Materials
E 447 Test Methods for Compressive Strength of Masonry
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5.1 Materials used as ingredients in extended life mortar
Prisms
shall conform to the requirements specified in 5.1.1 through
E 518 Test Methods for Flexural Bond Strength of Ma-
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5.1.4.2.
sonry
5.1.1 Cementitious Materials—Cementitious materials shall
2.2 Other Document:
conform to the following ASTM specifications.
National Institute of Standards and Technology, Handbook
5.1.1.1 Portland Cement—Types I, II or III of Specification
44, Specifications, Tolerances, and Other Technical Re-
C 150.
quirements for Commercial Weighing and Measuring
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5.1.1.2 Masonry Cement—Types M, S, or N of Specifica-
Devices
tion C 91.
5.1.1.3 Hydrated Lime—Specification C 207, Type S.
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This specification is under the jurisdiction of ASTM Committee C-12 on
NOTE 2—Type N limes may be permitted if shown by test or perfor-
Mortars for Unit Masonry and is the direct responsibility of Subcommittee C12.03
mance record to be not detrimental by the autoclave expansion.
on Specifications for Mortar.
5.1.2 Aggregates—The aggregate shall comply with Speci-
Current edition approved July 15, 1995. Published September 1995. Originally
published as C 1142 – 90. Last previous edition C 1142 – 94.
fication C 144.
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Annual Book of ASTM Standards, Vol 04.01.
5.1.3 Water—Water shall be clean and free of oils, acids,
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Annual Book of ASTM Standards, Vol 04.05.
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alkalies, salts, organic materials or other substances that may
Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402. be deleterious to mortar or corrosive to metals in the masonry.
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C 1142
TABLE 1 Property Specification Requirements
7.3 Mortar of known higher strength shall not be indiscrimi-
A
Avg Compressive nately substituted when a mortar type of anticipated lower
Water Air
Strengt
...